When I had one( don't any more) it really liked a undertaker non ported hd .582. I thank I payed 10 bucks for it. I shot chokes that put up bigger numbers, but that choke gives you a real life huntin pattern That chokes in an h&r now with the same results. I'm pretty sure I found one the other day on ebay for around 15-20 bucks. I would also try a tightwad .570 and maybe a tru glo ssx. I sure would try to et you're hands on some fed hw 7. It really made a difference for me, and if you're boy is recoil sensitive or small , you can get 2/34 with 11/8 ounce a shot in them. Good luck
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